Bird banders in Cook Township banded a one-in-a million bird — a rose-breasted grosbeak with half its body looking like a male and the other half, a female. The bird was banded on Sept. 24 at Carnegie ...

Every once in a while, a genetic anomaly will occur in the animal world that blows scientists’ minds. Take, for example, the exotic bird in the image above. It’s “gynandromorphic,” which means a ...

Avian researchers in western Pennsylvania are celebrating the recent discovery of a rose-breasted grosbeak with male and female traits, a rare instance they likened to "seeing a unicorn." The ...

In Rector, Pa., researchers have spotted one strange bird. This rose-breasted grosbeak has a pink breast spot and a pink “wing pit” and black feathers on its right wing — telltale shades of males. But ...

Researchers with a team monitoring bird populations at Powdermill Nature Reserve, in Rector, Pennsylvania, netted a surprise on September 24: a rose-breasted grosbeak with bizarre coloring. It had the ...

With a large white beak, a dazzling crescent of yellow on the dark forehead and a large patch of white feathers on the wings, there is nothing in our area that looks quite like an evening grosbeak.

This Rose-breasted Grosbeak gynandromorph bird possesses both male and female physical traits, including different colored wing pits. Male Grosbeak have reddish pits, while females have yellow. A rare ...